Cheonmun gigi 천문기기(天文機器)
RO : Cheonmun gigi MC : Ch’ŏnmun kigi
Year : ?-?
Categories : Scholarship·Science and Technology>Natural Sciences
BT :
Cheonmunhak
NT :
Cheonmundo Ganpyeongui
Ganui Gyupyo
Gyupyo Honcheonui
Honsang Ilgu
Jeokdohwan Seongjwapan
Sikjeomcheonjiban